Deut 13:1-3 (NIV) If a
prophet, or one who foretells by dreams, appears
among you and announces to you a
miraculous sign or wonder, 2 and if the sign or
wonder of which he has spoken takes place,
and he says, "Let us follow other gods"
(gods you have not known) "and let us
worship them," 3 you must not listen to the
words of that prophet or dreamer. The LORD
your God is testing you to find out
whether you love him with all your heart and with
all your soul.